如何使用与PHP一起使用的Java HttpClient库上载文件
我想编写Java应用程序,它将使用PHP将文件上传到Apache服务器。Java代码使用Jakarta HttpClient库版本4.0 beta2:
import java.io.File;import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.FileEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
public class PostFile {
public static void main(String[] args) throws Exception {
HttpClient httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost("http://localhost:9002/upload.php");
File file = new File("c:/TRASH/zaba_1.jpg");
FileEntity reqEntity = new FileEntity(file, "binary/octet-stream");
httppost.setEntity(reqEntity);
reqEntity.setContentType("binary/octet-stream");
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);
HttpEntity resEntity = response.getEntity();
System.out.println(response.getStatusLine());
if (resEntity != null) {
System.out.println(EntityUtils.toString(resEntity));
}
if (resEntity != null) {
resEntity.consumeContent();
}
httpclient.getConnectionManager().shutdown();
}
}
PHP文件upload.php
非常简单:
<?phpif (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
echo "File ". $_FILES['userfile']['name'] ." uploaded successfully.\n";
move_uploaded_file ($_FILES['userfile'] ['tmp_name'], $_FILES['userfile'] ['name']);
} else {
echo "Possible file upload attack: ";
echo "filename '". $_FILES['userfile']['tmp_name'] . "'.";
print_r($_FILES);
}
?>
阅读响应,我得到以下结果:
executing request POST http://localhost:9002/upload.php HTTP/1.1HTTP / 1.1 200 OK
可能的文件上传攻击:文件名“。
数组
(
)
这样请求就成功了,我可以与服务器通信了,但是PHP没有注意到文件-
is_uploaded_file
返回的方法false
和$_FILES
变量为空。我不知道为什么会这样。我已经跟踪了HTTP响应和请求,它们看起来还不错:
请求是:
POST /upload.php HTTP / 1.1内容长度:13091
内容类型:二进制/八位字节流
主机:localhost:9002
连接:保持活动
用户代理:Apache-HttpClient / 4.0-beta2(java 1.5)
期望:100-继续
˙Ř˙ŕ.....其余的二进制文件...
和回应:
HTTP / 1.1 100继续HTTP / 1.1 200 OK
日期:2009年7月1日星期三06:51:57 GMT
服务器:Apache / 2.2.8(Win32)DAV / 2 mod_ssl / 2.2.8 OpenSSL / 0.9.8g mod_autoindex_color PHP / 5.2.5 mod_jk / 1.2.26
X-Powered-By:PHP / 5.2.5
内容长度:51
保持活动:超时= 5,最大= 100
连接:保持活动
内容类型:text / html
可能的文件上传攻击:文件名''.Array
(
)
我正在使用xampp的本地Windows XP和远程Linux服务器上对此进行测试。我还尝试使用HttpClient的早期版本-版本3.1-
is_uploaded_file
返回的结果更加不清楚false
,但是$_FILES
数组中填充了正确的数据。
回答:
好的,我使用的Java代码是错误的,这里是正确的Java类:
import java.io.File;import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.ContentBody;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
public class PostFile {
public static void main(String[] args) throws Exception {
HttpClient httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
HttpPost httppost = new HttpPost("http://localhost:9001/upload.php");
File file = new File("c:/TRASH/zaba_1.jpg");
MultipartEntity mpEntity = new MultipartEntity();
ContentBody cbFile = new FileBody(file, "image/jpeg");
mpEntity.addPart("userfile", cbFile);
httppost.setEntity(mpEntity);
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);
HttpEntity resEntity = response.getEntity();
System.out.println(response.getStatusLine());
if (resEntity != null) {
System.out.println(EntityUtils.toString(resEntity));
}
if (resEntity != null) {
resEntity.consumeContent();
}
httpclient.getConnectionManager().shutdown();
}
}
注意使用MultipartEntity。
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